Home / 136,176.50-187,794.32-81,720.38

Finding the Fourth Proportional to 136,176.50, 187,794.32 and 81,720.38

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Solution

The fourth proportional to 136,176.50, 187,794.32 and 81,720.38 is: 112,696.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,176.50 : 187,794.32 = 81,720.38 : x
  2. Step 2: Convert to fraction form
    136,176.50/187,794.32 = 81,720.38/x
  3. Step 3: Cross multiply
    136,176.50x = 187,794.32 × 81,720.38
  4. Step 4: Simplify right side
    136,176.50x = 15,346,623,192.24
  5. Step 5: Solve for x
    x = 15,346,623,192.24/136,176.50
  6. Step 6: Final answer
    x = 112,696.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.